454 289 motor - Chevelle Tech
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post #1 of 19 (permalink) Old Aug 25th, 19, 1:53 PM Thread Starter
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James
 
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454 289 motor

Hey everyone,

Just looking for more information on a 454, 289 casting. It looks solid, but I havenít decided to purchase it yet. The owner bought it from someone but never installed it in a car. I was told it was pulled out of a wrecked Chevelle. It looks to have a edelbrock intake. If itís in good shape, is this a desirable motor to purchase? He said he would sell the a complete motor from carb to pan for $1,000. I think thereís some room to negotiate too.

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post #2 of 19 (permalink) Old Aug 25th, 19, 2:23 PM
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Bruce
 
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Re: 454 289 motor

In order to really know what you have you'll need the Casting Date as well as the Assembly Code on the pad "behind the alternator," and you might as well pull the valve covers and see what the unumbers on the heads are.

The "289" Block came out for the 1972 model year (in passenger cars, Chevelles, etc.) and was used until 1978 as a light truck block. It is a 2 bolt main block.
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post #3 of 19 (permalink) Old Aug 25th, 19, 2:39 PM
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The engine I’m building right now is a 289. 496 drops right in, no grinding.

Proving every day hindsight is 20/20.
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post #4 of 19 (permalink) Old Aug 25th, 19, 2:43 PM
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Re: 454 289 motor

Sorry, I could help with the 289 much more than the 454 part. Still learning about them.

66 Malibu Coupe, home rebuilt 350. Took me 39 years to get her!
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post #5 of 19 (permalink) Old Aug 25th, 19, 2:47 PM
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Some 289 castings came in 4 bolt main.
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post #6 of 19 (permalink) Old Aug 25th, 19, 3:00 PM
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Quote:
Originally Posted by Dragginwagon467 View Post
The engine I’m building right now is a 289. 496 drops right in, no grinding.
I should preface this statement with, SCAT crank, 6.385” SCAT I-beam rods. Your mileage may vary and you should always check.

Proving every day hindsight is 20/20.
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post #7 of 19 (permalink) Old Aug 25th, 19, 6:45 PM
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Re: 454 289 motor

Quote:
Originally Posted by Dragginwagon467 View Post
The engine Iím building right now is a 289. 496 drops right in, no grinding.
Not mine!

Gary

(oo_____oo)
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post #8 of 19 (permalink) Old Aug 25th, 19, 7:24 PM
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Re: 454 289 motor

AFAIK the 289 block is one of the preferred 454 blocks.
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post #9 of 19 (permalink) Old Aug 25th, 19, 8:49 PM
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Quote:
Originally Posted by gman628 View Post
Quote:
Originally Posted by Dragginwagon467 View Post
The engine I’m building right now is a 289. 496 drops right in, no grinding.
Not mine!
Very strange, was it core shift? Maybe SCAT I-beams are thinner today?

Proving every day hindsight is 20/20.
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post #10 of 19 (permalink) Old Aug 25th, 19, 10:10 PM Thread Starter
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Re: 454 289 motor

Quote:
Originally Posted by blm View Post
AFAIK the 289 block is one of the preferred 454 blocks.


Thatís good to know! Iíd like to drop a 454 into my c10 and make it more tow friendly, so Iíd be more curious to how this one was built.


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post #11 of 19 (permalink) Old Aug 25th, 19, 10:11 PM Thread Starter
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Re: 454 289 motor

Quote:
Originally Posted by NickeyChevelle View Post
In order to really know what you have you'll need the Casting Date as well as the Assembly Code on the pad "behind the alternator," and you might as well pull the valve covers and see what the unumbers on the heads are.



The "289" Block came out for the 1972 model year (in passenger cars, Chevelles, etc.) and was used until 1978 as a light truck block. It is a 2 bolt main block.


Great information. Thank you!


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post #12 of 19 (permalink) Old Aug 25th, 19, 10:39 PM
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Re: 454 289 motor

Check the right front flange just in front of the passenger side cylinder head for any factory stampings.The partial VIN and the code for what car or truck it was originally installed in will be stamped there..... if it hasn't been machined off during a rebuild
Some 289 casting's were used in Corvettes in 72 and they mostly came with forged cranks back then.

John
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post #13 of 19 (permalink) Old Aug 26th, 19, 7:12 AM
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Re: 454 289 motor

Get casting numbers of the heads and see if the seller will drop the pan so you can check the mains and crank.
Other than early blocks for restoration purposes, no 454 block is worth a grand with junk heads and a cast crank. Even if it turned out to be a 4-bolt block with a forged crank and large oval port heads, a grand is still a bit steep, IMHO.

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post #14 of 19 (permalink) Old Aug 26th, 19, 8:24 AM
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Re: 454 289 motor

Learn from my mistake. PULL THE PAN or walk away. I bought a running 427, 512 block, 049 heads and torquer 2 intake. Paid $1000. Good #'s so I thought OK. It ran good in the Chevelle. Pulled it out during the off season. Pulled the pan. It had 2 different oem connecting rods and 3 types of rod bolts. GM had 3 different standard BB connecting rods. All different weights and strengths.
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post #15 of 19 (permalink) Old Aug 26th, 19, 8:25 AM
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Re: 454 289 motor

289 is a good block when you use good bolts or studs.
049 or 781 heads are good.
One of the bad things about a complete engine is you cannot check intake core shift. Too much and the heads are junk no matter what #.


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